Silver
CTWC - Shoreline Region-Guilford System
Silver occurs naturally in surface and groundwater and can be added to water as a biocide that inhibits growth of bacteria and algae. Increasingly, the use of antimicrobial nano-sized silver particles in consumer products contributes to silver in water sources used for drinking water.
30
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 12 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-29 | 140130CWCEIOC1 | ND |
| 2014-01-29 | 140130CWCDIOC1 | ND |
| 2014-03-05 | 2669IOC1 | ND |
| 2014-03-05 | 2673IOC1 | ND |
| 2014-03-05 | 2674IOC1 | ND |
| 2014-03-05 | 2676IOC1 | ND |
| 2014-06-12 | 8366IOC1 | ND |
| 2014-06-12 | 8367IOC1 | ND |
| 2014-08-13 | 140915-0115IOC1 | ND |
| 2014-08-13 | 141007-0044IOC1 | ND |
| 2014-08-13 | BG93593IOC1 | ND |
| 2014-08-13 | BG93595IOC1 | ND |
| 2015-02-12 | BH73177IOC1 | ND |
| 2015-02-12 | BH73178IOCR | ND |
| 2016-01-11 | BK50864IOC1 | ND |
| 2016-01-11 | BK50862IOC1 | ND |
| 2016-01-19 | BK54777IOC1 | ND |
| 2016-01-27 | BK58354IOC1 | ND |
| 2016-01-27 | BK58355IOCR | ND |
| 2016-03-14 | BK78126IOC1 | ND |
| 2016-06-01 | BN44892IOC1 | ND |
| 2017-01-18 | BX31347IOC1 | ND |
| 2017-03-08 | BX82062IOC1 | ND |
| 2017-06-07 | BY34926IOCR | ND |
| 2018-03-30 | CA11466IOC1 | ND |
| 2018-03-30 | CA11463IOCR | ND |
| 2019-01-30 | IOC1 200520057 | ND |
| 2019-02-27 | IOCR 200523002 | ND |
| 2019-06-24 | IOC1 200537625 | ND |
| 2019-07-10 | IOC1 200539998 | ND |